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/*
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* ADM5120 specific early printk support |
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* |
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* Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 as published |
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* by the Free Software Foundation. |
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* |
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*/ |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <asm/addrspace.h> |
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#include <asm/mach-adm5120/adm5120_defs.h> |
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#include <asm/mach-adm5120/adm5120_uart.h> |
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#define UART_READ(r) \ |
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__raw_readl((void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r))) |
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#define UART_WRITE(r, v) \ |
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__raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r))) |
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void __init prom_putchar(char ch) |
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{ |
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while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0); |
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UART_WRITE(UART_REG_DATA, ch); |
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while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0); |
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} |
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